The following code instantiates a NumberFormatInfo and change the group separator from a comma to a space.
We then use it to format a number to three decimal places:
using System; using System.Globalization; class MainClass/*from w w w . j a va 2 s.com*/ { public static void Main(string[] args) { NumberFormatInfo f = new NumberFormatInfo(); f.NumberGroupSeparator = " "; Console.WriteLine(12345.6789.ToString("N3", f)); // 12 345.679 } }
The initial settings for a NumberFormatInfo are based on the invariant culture.
You can Clone an existing format provider:
NumberFormatInfo f = (NumberFormatInfo) CultureInfo.CurrentCulture.NumberFormat.Clone();
A cloned format provider is writable-even if the original was read-only.